Burglar alarm for automobiles



J. L. GHUNGER. BUHGLAR ALARM FOR AUTOMOBILES.

APPLICATION FILED NOV. I2, I9I9.

Patented Mar. 28, 1922.

I Kff /m/E/vro jfl? 92mg@ ,4 TTOHNEI'S UNITED sTATEs JOHN LAWRENCE lG-Iil'l[FINGER, 0F NEW YORK, N. Y.

y BURGLAR ALARMFOR AUTOMOBILES.

Specification of Letters Patent. Patented Mar. 28, `1922.

Application led November 12, 1919. Serial No. 337,388.

To all whom t may concern.'

Be it known that I, JOHN'L; GE'i'riNGiiR,

a citizen of the United States, anda resident of the city of New York, boroughof Manhattan, in the `county and State of New York, have invented "a new and useful Burglar Alarm for Automobiles, of. which the following is afull, clear, and exact description.'

YThis invention relates to burglar alarms for automobiles andhas for `an object to provide an improved construction wherein a movement ofthe automobile willproduce a continuousringing of an alarm.

``Anotherobject of the invention is to provide a sounding device and means'associated therewith actuated by any wheel of the auto. mobile when the wheel is turned over so as to give an audible signal in case the automobile is moved by an unauthorizedperson.

A still further object ofthe invention is to provide a thief or burglar alarm for automobiles where a removable connecting head is usedv and placed in position by the owner whenleavingthe automobile, the same coacting with an electrical switch for causing a completion of ya .circuit to a sounding devicewhen the head is removedin animproper manner. l

` In the accompanying drawing:

Figure 1 is Va "fragmentary perspective view showing partof the hub of an automobile and part of the axle with an embodi ment of the invention applied thereto. Y

Figure 2 is a sectional view through the structure shown in Figure 1, illustrating the 4detail construction of the removable head* and contact mechanism embodying certain features ofthe invention.

Figure 3 is a sectionalview through Fig-L operated bell, or other sounding device when the wheels of the automobile are turned over. The arrangement is such that under ordinary circumstances during the .use of the automobile by the owner the bell will not be sounded,but when the proper or authorized driver leaVesthe machineihe closes the circuit of the bell and places a removable connecting member -or head in line with a projection from. oneof the wheels of the automobile. This removable `memberaots to normally keep the circuit of 'the bell open so that as long as the automobile is standing still the bell will not sound; However, in case a thief, or in fact in case any one starts the automobile going without removing the connecting member or head the projection on one of the wheelswill strike the head and release the same whereupon the circuit of the bellis closed'and said bell will begin to ring; f This, of course, will not stop the thief, nor-sto'pthe automobile, but will be notice to everyonefthat the automobile is being stolen. j

Referring to the accompanying drawing by numerals, 1 indicates a hollow rear axle provided 4in ordinary automobiles now in4 common use,vand a brake ringr connected to one ofthe rear wheels- 3. Thedevice has beenshown in connection with the rear axle andthe rear wheel, but it is evident that it sired manner to the brake ring 2 as for in-y stance byscrews.v If screws are used preferably the heads are filed off so that the stop.-

cannot be removed. The various stops 4 are provided with overhanging extensions 5 formed with slanting cam edges 6, whereby as they rotate they will come in contact with the inner part of the knob 7 of the pin 8 and force the knob outwardly, the same swinging with pin 8 and lever 9 on thepin 10 as shown in Figure 2.v This swinging outward movement will cause` the locking projection 11 mounted on lever 9 to be pulled out of the this occurs the connecting member or head 14 is released and is projected quickly out,

wise secured to one end ofspring 15. Thev4 other'end of spring 15 is soldered-or otherwise rigidly secured to a washer 20, connected.

if desired with the rounded end 21l of pin 22.

A spring 23 surrounds part offpin 22 and presses one end againstthe enlargementi21 and the other against the end 24 of sleeve 13` so thatl when sprnglj is released spring 23' ion may move the rod 2E?, longitudinally and cause the contact washer to move downivardly into engagement with the contact terminals 26 and 27, whereupon the circuit olf bell 2,8 is closed as the wires 29 and 30 are connected to these terminals. Preferably a protecting cap 3l is fitted over the end oit the outer sleeve 82 tor protecting the terminals QG and .27 and associate parts. It Will be noted that sleeve 32 is preferably made integral with a suitable bracket which is bolted or otherwisel rigidly secured to the axle l. The Wires 29 and 30 are connected with bell 28, a manually actuated switch 34, and a source of current 35, whereby when thc contact washer iu engagement `with the terminals 26 and 27 bell 28 will be oper* ated continuously provided sivitch 31,1. is closed. These wires aand switches are pret erably enclosed in a metal sheathing, or otherwise protected in some manner so as to make it impossible, or difficult, tor a burglar to cut the Wires. It desired the cap 31 is held on by screws which have their heads filed off or held in some other desired way which Will prevent ready tampering.

In operation, during the ordinary use of the car by an authorized person switch Bil is open and the head 14 is removed. Then the authorized driver desires to leave the car he places the head 14 in position as shown in Figure 2 and then closes switch 34. This sets the alarm so that in case the automobile is moved either by an authorized or unau' thorized person the projection 4t Will strike against knob 7 and cause the disengagement oit' the head 14 whereupon spring 1 5 will' torce the head out of the sleeve 13 and allow spring 23 to move the contact portion 25 into contact with the terminals 26 and 27 so that the circuit of bell 28 is closed. The bell will then ring until either the head 14 is again placed in position or switch 34 is opened. In case the automobile is not moved the parts will, ot course, remain as originally placed. ln a case of this kind the authorized driver on rei-entering the automobile will open switch 34- and then remove head 14; manually` This Will disconnect the current trom the bell so that the device 'is inoperative. Then the driver leaves the car again the same thing is done and so on often as desired.

What I claim is:

l. AQ circuit maker and breaker for burglar alarm for automobiles comprising a stop adapted to be connected with one of the Wheels of an automobile, a pair of spaced terminals, a connecting contact Washer, a spring acting to normally hold said contact Washer in contact with said terminals so as to maintain the circuit closed at that point, a second spring adapted to overcome the rst mentioned spring when in use. and a removable head acting to compress said second mentioned spring, said bread being formed with a catch for holding same .normally in a stationary position, Said catch beiilg provided with a pin projecting into the path of lmovement of the stop on said Wheel whereby when the wheel is turned over said catch will be operated and said catch released whereby the second mentioned spring will operate and release the first mentioned spring for permittingr the closing ot the circuit at said terminals.

2. A circuit maker and breaker comprisin;` a pair of terminals, a, spring pressed member tor connecting said terminals, a master spring ttor overcomingr said spring pressed member, a housing for supporting said spring pressed member and said master spring, a head removably positioned in said housing andV acting on said spring for placing same under tension, a catch carried by said head formed with a pin interlocking with said housing, and a lever connected with said pin, and an operating pin eXtend ing from the lever, and a stop adapted to strike said pin and move the same to one side for disengaging the catch whereby said head will be forced out of said casing by said master spring and the spring pressed member released Vso as to connect said terminals.

3. A circuit maker and breaker for burglar alarm for automobiles comprising a stop connected to one of the Wheels ol" the automobile, a casing to connect to a stationary part ot the automobile, a head removably positioned in said casing, a catch tor normally holding said head in the casing, said catch being provided with an extending member adapted to be engaged by said stop for releasing the catch, a master spring compressed by said head, a pair of terminals, ay contact tor connecting said terminals, and a comparatively Weak spring acting on said contact for causing the same to move inengagemcnt with said terminals. said comparatively iveak spring being overcome by said master spring when said head is in position whereby said contact is out ot' engage ment; With said terminals. Y

Ll. In a circuitmaker and breaker :for burglar alarms for automobiles a stop, a casing open at both ends, a sleeve arranged in saidpcasing providedwith an. open end and a closed end, said closed end having an aperture therein, a head fitting into said sleeve and provided with a projection` a catch mounted in said head adapted to interlock with said sleeve, a pin adapted to be operated by said stop, said pin being rigidly secured to said catch so that Whenithe pin is moved by the stop the catch Will bev disengaged so as to release said head, a master spring adapted to be compressed by the projection from said head, said master spring being arranged in said sleeve, a pin/extending through the aperture Ain said sleeve7 said pin having an enlargement at each end, one of said enlargements being acted upon by said master spring for holding `the pin in 'a vgiven position, a second Spring acting' on .the closed end of said sleeve and on one of the enlargements of the pin for moving the same in a direction against the action of said master spring, and a pair of terminals arranged in the path of movement of one of said enlarge- 10 leased so as to permit the second mentioned f spring 'to ymove the pin and thereby close the Circuit of Said terminals.

JOHN LAWRENGEGETTINGER, 

